Ingredients

Equipment Needed

• •Wok (carbon steel preferred, at least 14 inches)
• •Wok spatula

Instructions

1. 1

   Mix the sauce

   Combine the nam prik pao, fish sauce, oyster sauce, palm sugar, dark soy sauce, and water in a small bowl. Stir until the sugar dissolves. This is your sauce, built before the wok gets hot. Once the fire starts, you won't have time to measure anything. Every second counts at wok temperature. Have this ready, have your garlic chopped, your vegetables cut, your dried chilies prepped. Mise en place isn't a French concept. Every som tam vendor in Khlong Toei does the same thing. She just doesn't call it that.

   Taste the sauce before it goes in the wok. It should be savory, slightly sweet, with a roasted chili backbone. If it tastes flat, add another half tablespoon of nam prik pao. The chili jam is the engine of this dish.
2. 2

   Heat the wok

   Get your wok screaming hot over the highest flame your stove can produce. Add the oil. It should shimmer and start to smoke within seconds. If it sits there quietly, your wok isn't hot enough. Walk away and wait. Wok hei only happens at temperatures that feel dangerous. That's the point.

3. 3

   Bloom garlic and chilies

   Drop the garlic and dried chilies into the hot oil. Stir immediately. The garlic should sizzle on contact and turn golden at the edges within five seconds. The dried chilies will darken slightly and release a smoky, toasted aroma that hits the back of your throat. If the garlic blackens, your oil was too hot. Toss it and start over. Burnt garlic is bitter and it poisons the whole dish. This is a three-to-five second step. Garlic always hits the oil first. Always.

   Dried chilies (prik haeng) give slow, smoky heat, not the sharp punch of fresh bird's eye chilies. That's intentional. This dish is warm, not aggressive. The dried chili is toasted in oil to release its capsaicin gradually.
4. 4

   Sear the chicken

   Add the chicken pieces in a single layer. Do not touch them for thirty seconds. Let the wok do the work. The chicken needs contact with the hot metal to get color, to get char, to get wok hei. After thirty seconds, flip and toss. Cook for another minute until the pieces are golden on the outside and just cooked through. If you're cooking for four, do this in two batches. Crowding the wok drops the temperature and you get boiled chicken. Nobody wants boiled chicken.

5. 5

   Add the vegetables

   Toss in the onion wedges and bell pepper. Stir-fry for forty-five seconds. The onion should soften at the edges but keep its structure. The bell pepper should be bright and barely tender. You want crunch. Overcooked vegetables are not Thai stir-fry. They're sad.

6. 6

   Pour in the sauce

   Push everything to the side of the wok and pour the sauce mixture into the center, directly onto the hot metal. It will bubble and caramelize instantly. That's the nam prik pao sugars hitting the heat. Toss everything together so every piece of chicken and every vegetable is coated. The sauce should glaze, not pool. If there's liquid sitting at the bottom, your heat was too low. Thirty seconds of tossing and it's done.

   Pouring the sauce onto the bare wok surface instead of over the food lets the sugars in the nam prik pao caramelize directly. That's where the depth comes from. Don't skip this step.
7. 7

   Finish with cashews and spring onion

   Kill the heat. Add the roasted cashews and spring onion lengths. Toss twice, no more. The cashews are already roasted. They need ten seconds in the wok to warm through and absorb a little sauce. Any longer and they go from crunchy to chewy to ruined. The spring onions wilt from residual heat alone. Plate immediately over jasmine rice. Don't let it sit. A stir-fry that rests in the wok is a stir-fry that overcooks.

Chef Tips

• •The nam prik pao (roasted chili jam) is the backbone of this dish. It's not a minor seasoning. It's the primary flavor builder: roasted dried chilies, shallots, garlic, shrimp paste, palm sugar, all cooked down into a concentrated paste. Buy a quality Thai brand (Maesri or Pantai are solid) or make your own. If it tastes like sugar with food coloring, find a different jar. The good stuff smells like smoke and shrimp and has visible chili seeds.
• •Cashews must be roasted before they go into the wok. Buy them pre-roasted, or dry-roast raw cashews in a pan over medium heat, shaking constantly, until they're golden and fragrant. About three to four minutes. Watch them like a hawk. They go from golden to burnt in the time it takes to check your phone. And they go in at the end. The very end. Treat them like holy basil: a last-second addition that should stay crunchy on the plate.
• •This dish uses dried chilies (prik haeng), not fresh ones. The difference matters. Dried chilies give a warm, smoky, slow-building heat. Fresh bird's eye chilies give a sharp, immediate burn. Gai pad med mamuang is supposed to be warm, not fiery. If you want more kick, add a sliced fresh chili at the table. Don't mess with the balance in the wok.
• •Chicken thigh is better than breast here. Thigh has more fat, more flavor, and it doesn't dry out in a screaming-hot wok the way breast does. Cut it into consistent bite-sized pieces so everything cooks at the same rate. Inconsistent cuts mean some pieces are charred while others are raw in the center.

Advance Preparation

• •Cashews can be dry-roasted up to a week ahead and stored in an airtight container at room temperature. They'll stay crunchy.
• •The sauce can be mixed in a bowl up to a few hours ahead and kept at room temperature. Stir before using.
• •Cut the chicken and vegetables up to a few hours ahead and keep them refrigerated, covered. Bring the chicken to room temperature for ten minutes before cooking so it doesn't drop the wok temperature.

Frequently Asked Questions

Nutrition Information

1 serving (about 500g)